Tweetbot for Mac — It's finally here! (sort of) — Tweetbot for Mac is finally available! However it may not be quite as you had hoped. Developing for the Mac is no easy task, especially a full-featured Twitter client. However, we've gotten to a point where while not complete, it is useable.

Tweetbot for Mac: Public Alpha Review — Today, Tapbots released the first public alpha of Tweetbot for Mac. This is not a final review of the app: being in the development stage — albeit ready to be tested by the public — Tweetbot for Mac is still lacking several features that will be available …

Twitter's Pitch Deck for Big Advertisers (Slides) — Twitter's ad business is looking less like an experiment and more like a real business, one that could generate $1 billion a year in the not-too-distant future. — If Twitter ads really take off, it will be because CEO Dick Costolo …

Twitter CEO says company has ‘a truckload of money’ — Twitter Chief Executive Dick Costolo told the Los Angeles Times his company has a “truckload” of money and will hold off going public for as long as it wants. He's pictured here at event in Cannes, France, three weeks ago.

Amazon, With Suppliers, Is Testing a Smartphone — TAIPEI—Amazon.com Inc. is working with component suppliers in Asia to test a smartphone, people familiar with the situation said, suggesting that the Internet retail giant, which sells the Kindle Fire tablet computers, is considering broadening its mobile-device offerings.

Ballmer: “Surface Is Just a Design Point” — By designing and building the Surface tablet itself, Microsoft is not blowing off its longtime PC manufacturing partners. And PC makers shouldn't take it that way. Surface is a reference design meant to show them what's possible.

Facebook wants to be your online bank — The social media giant is quietly supporting new services for banks that want to engage socially with their customers: The decidedly unsocial business of online banking. — FORTUNE — Someday soon, Facebook users may pay their utility bills …

Ouya games console blasts past $2.3m — The challenge now is to deliver on the expectations of its 19,000 early backers — US startup Ouya has attracted $2.3m (£1.47m) of pledges for its Android-based games console, less than 24 hours after launching its campaign on crowdfunding website Kickstarter.

Confessions of an Internet Addict — Newsweek's cover story this week posits that “new research says the Internet can make us lonely and depressed—and may even create more extreme forms of mental illness.” We found an Internet addict to tell us all about his affliction.

NBC and Facebook to Announce Olympics Partnership — Users of Facebook, later this summer, will be reminded about NBC's coverage of the Olympic Games in London. And viewers of NBC's coverage, at the same time, will be nudged to talk about the Games on Facebook.